ContactInfoForm: display 'Not Applicable' choice for states at the very least
ContactInfoForm: display 'Not Applicable' choice for states at the very least

If country is None, or if there aren't any states for that country,
return a list with a single choice, "Not Applicable".

In ContactInfoForm's init, don't bother checking the choices, since we
can be sure that it is a non-empty list.

ringemup/satchmo,twidi/satchmo,Ryati/satchmo,twidi/satchmo,ringemup/satchmo,Ryati/satchmo,dokterbob/satchmo,dokterbob/satchmo